<html xmlns="http://www.w3.org/1999/xhtml">
   <head>
      <title>Empty Property</title>
      <script type="text/javascript" src="../build/RDFa.js">//</script>
   </head>
   <body>
      <div vocab="http://schema.org/" resource="A">
         <a href="B" property="">something</a>
      </div>
   </body>
</html>